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Prediction of Changed Design Parameter of Proportional Damping Structure by Using Modified Dynamic Characteristics

동특성 변화를 이용하여 비례감쇠 구조물의 변경된 설계파라미터 예측

  • Lee, Jung-Youn (Dept. of Mechanical System Engineering, Kyonggi Univ.)
  • 이정윤 (경기대학교 기계시스템공학과)
  • Received : 2010.01.25
  • Accepted : 2010.05.23
  • Published : 2010.07.01

Abstract

It is common to predict structural dynamic design parameters due to the change of design parameter, but to predict the amount of changed design parameter where the mass and stiffness are being modified are rarely found in previous literature. In this study, the changed design parameter in a proportional damping system is predicted by using sensitivity coefficients and an iterative method. The sensitivity coefficients are determined from the changes in eigenvectors; these changes are due to modification. This method is applied to a three-story shear structure. To validate the prediction of the changed design parameter, the results are compared to the reanalysis results; both results are in good agreement.

Keywords

Sensitivity Coefficient;Dynamic Characteristics;Proportional Damping System

Acknowledgement

Supported by : 경기대학교

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